Mobile Speed Test

Check your phone or tablet's internet speed instantly — no app download required. Measures download, upload, ping, and jitter directly in your mobile browser.

25+ Mbps — Great

4K streaming, video calls, and cloud gaming all run smoothly on a single device.

10–25 Mbps — Good

HD streaming, social media, and standard video calls are comfortable.

5–10 Mbps — Acceptable

Standard-definition streaming, browsing, and music are fine. HD video may buffer.

Under 5 Mbps — Poor

Likely on a congested cell tower or in a weak signal area. Video calls may drop.

What affects mobile internet speed?

Mobile internet speed — whether on 4G LTE, 5G, or Wi-Fi — depends on several factors that don't apply in the same way to fixed home broadband.

Network technology (4G vs 5G)

The generation of cellular network your phone connects to has the biggest single impact on peak speed. 5G Sub-6 GHz typically delivers 100–400 Mbps in real conditions. 5G mmWave (available in dense urban areas) can exceed 1 Gbps in short bursts but has very limited range. 4G LTE averages 20–60 Mbps on a good signal. LTE-Advanced (carrier aggregation) can reach 150+ Mbps. Older 3G connections average 2–10 Mbps — barely usable for modern apps.

Signal strength

Even on a 5G network, weak signal dramatically cuts throughput. Every bar lost roughly halves the effective data rate. Buildings, terrain, and distance from the nearest tower all reduce signal strength. The number of bars shown by your phone is a rough guide — the actual signal quality (RSRP in dBm) matters more than the bar count.

Cell tower congestion

A tower's bandwidth is shared among all connected users. During commute hours and public events, dozens of phones may compete for the same spectrum. This is why mobile speeds often drop significantly between 8–9am and 5–7pm in urban areas. Learn more about ISP congestion →

Wi-Fi vs cellular

Most modern smartphones prefer connected Wi-Fi over cellular when both are available. If you're on Wi-Fi, your speed is limited by your Wi-Fi connection and your home broadband plan — not your cellular plan. Run the test once on Wi-Fi and once with Wi-Fi disabled to compare both connections.

What is a good mobile download speed?

The right speed depends on how you use your phone:

Casual browsing and social media — 5 Mbps is enough
HD video streaming — Netflix recommends 5 Mbps; YouTube's 1080p needs 8 Mbps
4K streaming on a tablet — 25 Mbps recommended
Video calls (Zoom/Teams) — 3 Mbps for SD, 8 Mbps for HD group calls
Mobile cloud gaming — 15–25 Mbps download plus low ping (under 50 ms) required

For more detail on speed requirements, see our how much internet speed do I need guide.

What is a good mobile ping?

Ping on cellular networks is typically higher than on wired broadband. Typical ranges:

5G: 10–30 ms average ping
4G LTE: 30–60 ms average ping
3G: 80–200 ms — too high for real-time gaming or voice calls

If your ping is above 150 ms on a 4G connection, you may be connected to a distant cell tower or on a congested network. See our ping test for a dedicated latency measurement.

How to improve your mobile speed

Switch between Wi-Fi and cellular

If your home Wi-Fi is faster than your cellular signal, keep Wi-Fi on. If you're in an area with a strong 5G signal and weak Wi-Fi, toggle Wi-Fi off to use cellular directly.

Toggle airplane mode

Switching airplane mode on and off forces your phone to reconnect to the nearest tower and re-negotiate the connection type. This often resolves a stuck 3G connection when 4G is available.

Choose the right network mode

In your phone settings (under Mobile/Cellular Network), you can force 5G or LTE-only mode. If 5G coverage is patchy in your area, forcing LTE-only can give more consistent (if slightly lower) speeds by avoiding constant network switching.

Check data throttling

Most unlimited mobile plans throttle video streaming to 480p or 720p and may throttle all data after a monthly cap (typically 15–100 GB depending on plan). This isn't a network problem — it's an intentional carrier restriction. Compare your throttled speed against your plan's stated limits. Learn how to detect throttling →

Use Wi-Fi calling and VoLTE

Voice over LTE (VoLTE) and Wi-Fi calling improve call quality and can free up capacity on the data channel during calls. Enable both in your phone settings if your carrier supports them.

How this test works on mobile

This page runs entirely in your phone or tablet's browser — no app download needed. When you press GO:

Your device connects to the nearest test server
14 ping packets measure your latency and jitter
A download stream runs for 8 seconds, measuring throughput in real time
Upload chunks are sent for 6 seconds to measure upload speed
Results are saved and you can compare against other users

The live chart above shows your download and upload throughput second-by-second as the test runs. Read the full methodology →

Mobile speed vs. desktop speed

It's common for mobile speed tests to show lower results than a desktop or laptop on the same network. The reasons include:

Wi-Fi antenna size — phones have smaller antennas than laptops and receive a weaker Wi-Fi signal
Processor limits — mobile CPUs handle fewer TCP connections simultaneously, capping peak throughput
Background app activity — push notifications and background sync consume bandwidth during the test
Carrier QoS — some networks deprioritise browser-based traffic vs. native-app traffic

For the most accurate mobile speed reading, close background apps before running the test and ensure your phone is not simultaneously syncing to iCloud, Google Drive, or similar services.